Burnishing mechanism



` R. J. sTATz 1,913,734

BURNISHING MECHANISM June 13, 1933.'

Filed Jan. 30, 1930 ze f l` INVEN'TOR.

ROBERI J. STATZ a HG 4 5; ATTORNEY 'Patented June 13,A 1933 lUNITEDSTATES PATENT OFFICE f ROBERT J. STATZ, F SUUTH BEND,l ABSIGNOB T0BENDIX-COWDBEY BRAKE TESTER, INU., 0F .SOUTH BEND, INDIANA,l .AOORPOATION QF DELAWARE numnsnnm nommen Application Med Ilnulry 80,'1930. Serial N0. 424,688.

This inventiont relates to burnishing machines and more particularly tomachines for burnishing brake bands.

An object of the invention is to provide a burnishing machine in whichthe burnishing elementurnishes the feeding power.

Another object of the invention is to rovide a burnishing machine with afee ing element, the drivingpower of'which: is urlo nish'ed by theburnishingelement of the machine and a control means for the feedingelement. Y

Another object of the invention is .to provide a burnishing machinelhaving an automatic `feeding means, the driving power of which isfurnished by the burnishing element of the machine and a rictionalcontrol means for the feeding means.

A further object of the invention is to pro- 20 vide a burnishingmachine having a burnishing disk and a feeding means driven thereby andvmeans associated with the feeding means imposing a drag thereon toprevent the feeding means from moving at the same rate of 25 speed asthe burnishing disk.

- lA still further object of the invention is to provide a burnishingmachne which will be simple and inexpensive in construction,

l' highly eilicient in use, positive in action, du-

rable in service and a general improvement in the art.

Other objects of the invention will appear from the followingdescription taken in con- I nection with the drawing'which forms a partof this specification, and in which:

Figure 1 isv atop plan view of a burnishing machine embodying theinvention;

Figure 2 is a side elevation partly in section v Figure 3 is a detailedview illustrating means for locking a brake band on the feedingelement.; and Y 'Figure 4 is anenlargeddetailed viewrof.

the'feeding means.

Referring to the drawingl for more specific details of the invention,represents a base, having positioned thereon av pedestal 11 su porting atable 12. A motor 13 is bolteor otherwise secured to the table andmounted upon the shaft lof/the motor is al burnishing disk 14.: I

As shown, the table is provided with a slot 15 positioned at rightangles to the plane of `rotation of the disk and preferably in aperpendicular plane passing through the longitudinal axis of the motorshaft. A screw 16 is mounted for rotation on the bottom of the .tablebeneath the slot and isy provided with the conventional nut 17 by meansof which it may be driven.

A sleeve or block 18 is mounted to travel on the screw 16. This blockbears against the bottom of the table on each-.side of the slot 15. Theblock'has formed integral therewith a stud or shaft 19 which extendsupwardly through the slot 15. This shaft supports a sleeve 20 which issecured in position by a nut 21 threaded on the end of the shaft. The

sleeve 20 has a flange 22 which bears on the top of the table on eachside of the slot and the flange is provided with a pin 23 adapted toengage the slot and retain the sleeve 2O against rotation. s

v Positioned on the upper face of the flange 22 is a frictional disk 24andl mounted for rotation on the sleeve 20 is a sleeve 25 having a flane 26 engaging the frictional disk The ange 26 has a shoulder peripheryTin which is secured an annular support 2 by bolts 28. The sleeve 25 isexternally threaded to receive an internally threaded sleeve 29.

secured a plate 35 havingv lateral projections to which is attacheda-handle86. As shown,

the lugs 34 and the plate 35 have registerin apertures in which bolts 37are positioned an helical springs 38 are interposed between the lugs 34and nuts threaded on the ends of the v bolts.

. the pin 40 and the other end engaging the hook or fastening member 43.The lever 42 is then manipulated to securely clamp and lock the brakeband in position. With the brake band thus secured in position, thescrew 16 is adjusted to back the brake band hard against the burnishingdisk 14 and the sleeve A29 is adjusted through the -handle 36 to imposea light initial drag on the support for the brakeband through means ofthe frictional Iengagement between the disk 26` and thelfrictional disk24. .With the burnishing disk 14 in motion', .the frictional engagementof the burnishing disk with the work piece or brake band will cause thesup ort for the brake band to rotate. It is desired that the support forthe band may rotate at a rate of yspeed less than the rate of rotationof the burnishing disk. This may be-readily accomplished by means of thebraking or frictional engagement of the support for the work piece withthe frictional disk.

It will be observed Ithat the burnishing disk furnishes the feedin powerfor the su port through the work piece or brake ban and that the rate ofrotation of the suiport and hence the brake band may be rea ilyregulated or controlled by imposing a. drag thereon through itsfrictional engagement with its bearing surface, to either increase ordecrease the rate of rotation thereof. It is, of course, understood thatit is desirable to impose suflicient drag on the support to cause it tomove ata rate of speed less than the rate of rotation of the burnishingdisk.

While a preferred embodiment of the invention has been described, it isto be understood that this is given merely as an example of theunderlying principles of the inventiomand since these may beincorporated in other specific mechanical structures, I do not intend tobe limited to the structure shown except as such limitations are clearlyimposed by the appended claims.

1. A burnishing machine comprising a burnishing element, a feeding meanspositioned for rotation in a plane at right angles to the plane ofIrotation of the vburnishing element ing element and means resistingmovement of the feeding element.

3. A burnishing machine comprising a burnishing element, a feeding meanspositioned for rotation in a plane at right angles to the plane ofrotation of the burnishing element and receiving its driving power fromthe burnishing element, means imposing a pressure between the burnishingelement and feeding means and means controlling the rate of movement ofthe feeding means.

4. A burnishing machine comprising a burnishing element, a feeding meanspositioned for rotation in a plane at right angles to the plane ofrotation of the burnishing element and receiving its driving power fromthe burnishing element, a screw for backing the feeding means againstthe burnishing element and means includinY a frictional element and ascrew for imposing a drag on the feeding element.

5. In a burnishing machine for cylindrical surfaces, a plane burnishingsurface, means for rotating the burnishing surface in its own plane, arotatable work support designed to maintain the burnishing surface andthe cylindrical surface in tangential relation and adapted to befrictionally driven by the rotation of the burnishing surface, andfrictional means imposing a drag on the work support.

In testimony whereof, I have hereunto signed my name.

ROBERT J. STATZ. v

